OVERAGING OF OUTOKUMPU CuCrZr

Book · Sun Apr 01 04:00:00 EDT 2001

OSTI ID:984263

Edwards, Danny J; Singh, B N

Aging at 850°C for 4 hours essentially removed the fine-scale precipitates produced during the prime aging treatment. Aging at 700°C lead to large scale coarsening that produced denuded zones along grain and twin boundaries, grain boundary precipitates, and removed all of the fine-scale defects to produce precipitates 20 nm in size or larger. Aging at 600°C lead to somewhat similar microstructure compared to the 700°C aged specimens, however the average size of the precipitates was not quite as large and the density appears to be somewhat higher. Denuded zones formed along all boundaries, but the grain boundary precipitation was not as extensive as in the case of the specimens aged at 700°C. Further characterization will be conducted to determine the identity and chemistry of the precipitates observed in the aged microstructures.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 984263
• Report Number(s): PNNL-SA-31882; AT6020100
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
AGING
CHEMISTRY
DEFECTS
MICROSTRUCTURE
PRECIPITATION